Bolt blank machine



(N0 Model.) 2 SheetsSheet 1.

. W. E. WARD. BOLT BLANK MACHINE.

No. 341,970. tented May 18, 1886.

WITNESSES.

(No Model.) 2 Sheets-Sheet 2.

U W. E. WARD.

BOLT BLANK MACHINE.

FIG-HIM FIG-H- INVENTUR UNI-TED @TATES \VILLIAM E. XVARD, OF PORTCHESTER, NEW YORK.

BOLT BLANK MACHlNE.

SPECIFICATION forming part of Letters i atent No. 341,970, dated May 18,1886.

Application filed December :24, 1885. Serial No. 186,592. (No model.)

To all whom it may concern Be it known that 1, WILLIAM E. WARD, acitizen of the United'States, residing at Port Chester, in the county of\Vestchester and State of New York, have invented a new and usefulImprovement in Machines for Forming BoltBlanks from Cold Rods of Metal;and I do hereby declare the following specification, taken in connectionwith the accompanying drawings, forming a part of the same, to be afull, clear, and exact description thereof.

The feature of the present invention which distinguishes it from allformer machines for heading-bolts with which I am acquainted is, thatthe rod from which the bolt-blanks are to be consecutively formed is fedforward a succession} of times through the gripping-jaws, which hold andsustain the rod to enable the head to be formed by a succession ofupsetting operations, each upsetting action of the headforming ram beingconsequent upon a fresh feeding of the rod. By my invention I am enabledto form heads of any desired size upon either square or round rod-stoclr for boltblanks, and in case round stock is used a square underthe head of sufficient length for all ordinary requirements of a boltcan be obtained.

My invention can be applied to any ordinary single acting bolt headingmachine known for many years in the art by simply reorganizing the same,so that the mechanism which feeds the rod through the gripping jaws ordies shall be arranged, first, to feed forward the rod beyond theanvil-faces of such jaws or dies aprescribed distance to enable theheading-ram when it advances to upset the portion of the rod soprojectin In this respect the action is analogous to that which isperformed by ordinary bolt-heading machines; second, to arrange thefeeding mechanism in timely relation to the retreating movement of theheading-ram, so that the rod will be fed forward through the grippingjaws or dies for a further distance, to enable the heading'ram when itnext advances to perform a second upsetting operation thereon; and,third, if so de sired, to arrange the machine so as to effect successiveoperations of rod-feeding and headupsetting until the completed head ofany required size is formed, the distinguishing characteristic of myinvention being the performance of a succession of feeding operationswhile the rod is contained between the same pair of gripping jaws ordies, and asuccession of upsetting operations upon suchintermittingly-fed rod, whereby a full head of any size can beprogressively formed from a rudiment tothe completed whole.

In the accompanying drawings, Figure 1 represents in side view andpartial section a machine for forming bolt-blanks in accordance with theinvention. Fig. 2 shows a longitudinal section of the same. Figs. 3 and4 represent, respectively, the cam for giving thehorizontal forwardmovements to the ram and the cam for causing the gripping jaws or diesto hold the rod. the gripping jaws or dies and the mechanism throughwhich the movable jaw is advanced. Fig. 6 shows a side View of the camand lever for operating the mechanism. Figs. 7 and 8 represent,respectively, a vertical section and a face View of the matrix or diefor shaping the head of the blank. Fig. 9 shows a side view of one ofthe gripping-jaws and the headed rod fed forward against a gage or stoppreparatory to severing the blank from the rod. Fig. 10 rep resents theblank. Fig. 11 shows the rod projecting beyond the face of one of thegrippingjaws after the blank has been severed and in ary bolt'hcad fedforward preparatory to the second upsetting operation. Fig. 14 repreFig. 5 shows an end view of sents the matrix or die acting upon the rodto complete the bolt-head.

A represents the frame of the machine, in and upon which the variousparts are mounted, the said frame being similar to those ofordinarybolt-heading machines.

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D D are the grippingjaws or dies. Through these the rod at, out of whichbolt-blanks are to be formed, is to be fed, such rod being gripped bythe jaws while the upsetting operation is being performed, the gripbeing relaxed at the time the rod is being fed.

Power is applied to the machine through the pulley E, keyed to thetransverse shaft 0, mounted in suitable bearings on the frame.

Upon the shaft e is keyed a pinion, f, (shown in dotted lines at Fig.1,) the teeth of which engage with the teeth of a gear-wheel, F, keyedto the transverse shaft G. Upon this latter shaft the various cams whichcontrol the movements of the heading-ram and the feeding mechanism aremounted.

99, Figs. 1 and 2, are the feeding-rollers, which are made to act tofeed forward the rod intermittingly in a well-understood way.

Assuming the rod a of bolt-stock to have been fed forward a prescribeddistance, as indicated in Fig. 11, the heading-ram advances by theaction of the tooth h of the cam H upon the arm K of the toggle K K. Thetoggle is thereby straightened, and its rear end being immovable,because resting upon the frame A, as shown in Fig. 2, the ram is movedhorizontally toward the gripping jaws or dies D D. The effect is toupset the end of the rod, and the result is to produce apartially-formed head, as illustrated at Fig. 12. The continuedrevolution of the cam H allows the ram to be I retracted by the springL. Gotemporaneously, or nearly so, with this backward'movement of theram the grip of the jaws D D is relaxed by the influence of the springI), Fig. 5, upon the jaw D, which spring is now allowed to act for thereason that the cam M, Figs. 2, 4, and 6, no longer operates through thelever N, pin it, toggle n if, and pin 12, Figs. 5 and 6, to hold thegripping-jaws shut. Thereupon the feed-rollers g g are caused to advancethe partially-headed rod against astop (preferably the die G, whichremains in alignment with the rod, as shown in Fig. 2) by the influenceof the rise 0 on the cam 0, Fig.1, which acts upon a pivoted arm, 0,connected by a rod, 0", to an arm, 0", carrying pawls 0 0", which engagea ratchet-wheel, 0", secured to the shaft upon which the lowerfeed-roll, g, is mounted. The rod, with its partially-formed head, willnow project beyond the anvil-face of the gripping-jaws, as illustratedat Fig. 13. The gripping-jaws now close again by the continued rotationof the cam M throughthe in- 1 fluence upon the lever N of the rise m onsaid cam. The heading-ram now for the second time advances through theinfluence of the tooth h of the cam H upon the toggle K K, and againupsets the rod, thereby completing the head of the bolt-blank, asillustrated at Fig. 14.

The above-described operations of feeding forward the rod, and ofcausing the ram to advance to further upset the head, may be repeatedany desired number of times by increasing the capacities of the cams O,M, and

H, controlling, respectively, the feeding mechanism, the gripping-jaws,and the horizontal movements of the ram. I

The completely-formed bolt-head having been made upon the end of therod, the ram is retracted by the spring L, to clear the same from therod. The ram-head is then elevated, in a very familiar way in this classof machines, by the influence of a spring, I, Figs. 1 and 2, which isconnected with the ram by a rod, 19, and acts, when permitted by thecontour of the cam Q, in the usual manner. The ram-head having beenelevated, the rod, with the fully-formed head thereon, is now fedforward, preferably against a stop, q, Figs. 1 and 9, for a distanceequal to the full length of the bolt-blank, and for such distance, inaddition, as will furnish the metal for the first operation of formingthe head on the succeeding blank, as illustrated at Fig. 9, in which thelength of the finished bolt is indicated by the dotted line Z Z. Theram-head is. now made to descend by the influence of the cam Q, Fig. 2,which acts upon a lever, B, connected by a rod, 0', tea bell-cranklever, r. The lever r is connected by a rod, 7, to the toggle-arms r r,one of which bears upon the ram-head and the other upon the frame of themachine, as shown in Fig. 2. The descent of the ramhead causes a cutter,0, Figs. 7 and 8, to act in conjunction with the movable rest S, Figs. 1and 2, to cut off the blank from the rod, as illustrated at Fig. 10.This rest has been brought up in a well-known manner, to support'the rodduring the descent of the ranr head, by the cam T, acting through thebellcrank lever t, connecting-rod t, and togglelever t t.

The operations before described are to be repeated in forming successivebolt-blanks.

If bolt-blanks made from round rods are to have a square under the head,the gripping jaws or dies D D are provided, respectively, with thenecessary die-recesses d 01, Figs. 5, 9, 11, 12, 13, and 14, well knownin the art, so as to produce such square, as shown in Figs. 9, 10, and14. It will be readily understood that by a succession of feedingoperations and a succession of upsetting operations in the formation ofthe head the square under the same will be progressively formed, andwill necessarily be more perfect in shape, and may be greater in lengththan when formed as heretofore practiced, which is a feature ofimportance.

It is apparent that in carrying out my invention it is not necessarythat the rod should be fed forward to'the same extent preliminary toeach upsetting operation; but the extent to which the rod may be fed forthe successive operations may be varied as experience in workingdifferent descriptions of metal may require for producing the bestresults. It will also be evident to constructers of this class ofmachinery that the specific devices and meerations hereinbeforedescribed can be greatly varied to produce the same result ofprogressively feeding forward a rod of stock for boltblanks, andsubjecting such rod, after each feeding operation, to the action of aram for upsetting the metal, and thereby progressively forming the bolthead thereon-as, for instance, instead of employing single cams or diskshaving more than one cam-face or salient projection, respectively, forproducing the horizontal movements of the ram, the movements of thegripping-jaws, and the feeding of the rod, separate cams may be used forcausing each definite movement of these parts, and such cams may belocated upon a single shaft, or upon more than one shaft, as will bereadily understood.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, substantially as hereinbei'ore set forth, ofmechanisms, substantially as described, for feeding forward atsuccessive times the rod from which blanks are to be made, for grippingat successive times the rod after it has been fed, and for upsetting atsuecessive times the end of the rod to form the head, such mechanismsbeing arranged as described, so that the said operations of feeding,gripping, and upsetting, respectively, shall follow each other inseries, whereby a complete head can beprogressively formed on the end ofthe rod.

2. The method, substantially as described, of progressively forming ahead upon boltblanks from cold rods of metal, which consists in aplurality of feedings, grippings, and up- 35 settings upon the rodbefore severing, following each other in series, as herein set forth.

W. W RD.

lVitnesses:

J OSEPH H. MARsHALL, Enson SALISBURY J oNEs,

